Sen. Lindsey Graham Could Face Multiple Primary Challengers

South Carolina Sen. Lindsey Graham is facing at least one, and possibly two more, primary challengers for the seat he's held for the past decade.

Nancy Mace, a small business owner from Charleston who was one of the first of two women to graduate from The Citadel, said Thursday she's planning a "special announcement" Saturday at a county GOP breakfast being held in her hometown of Goose Creek, Politico reports.

Mace is expected to be the second Republican to sign on to challenge Graham, who has faced criticism from tea party conservatives about his willingness to compromise on some liberal-backed issues. South Carolina attorney Richard Cash has already announced his candidacy against Graham.

Graham may also face a third Republican challenger, State Sen. Lee Bright, reports TheState.com.

Bright, well-known as an outspoken libertarian, has said he is waiting to see if GOP Reps. Trey Gowdy or Jeff Duncan plan to enter the Republican primary against Graham as well.

He expects to announce his decision in the next few weeks. Meanwhile, neither congressman has announced any plans to challenge Graham.

Any challenger to the Republican incumbent will need to raise a great deal of money to sustain a competitive campaign. The two-term senator already has more than $6.3 million in his campaign war chest.

Confirming her planned announcement on Saturday, Mace told the Daily Caller, "This isn't about one senator. The only way to change Washington is to change who we send to Washington."

Challengers to Graham are also expected to have plenty of help from outside conservative groups anxious to see him gone. The Senate Conservatives Fund, for one, has said it plans to help defeat him if "if strong, conservative challengers emerge."

Mace could fit the bill. She is the daughter of retired Army Brigadier Gen. Emory Mace, one of The Citadel's most highly decorated alumnus. She is also the author of the well-received book, "In the Company of Men: A Woman at The Citadel," in which she chronicles her upbringing and experiences attending the formerly all-male military college.